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    BS 8313-1997 Code of practice for accommodation of building services in ducts《建筑物管道使用方便实施实用规程》.pdf

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    BS 8313-1997 Code of practice for accommodation of building services in ducts《建筑物管道使用方便实施实用规程》.pdf

    1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 8313 : 1997 ICS 91.140

    2、.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Code of practice for Accommodation of building services in ductsBS 8313 : 1997 This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the au

    3、thority of the Standards Board and comes into effect on 15 July 1997 BSI 1997 First published as CP 413, March 1951 Second edition July 1973 Third edition July 1989 Fourth edition July 1997 The following BSI references relate to the work on this standard: Committee reference B/209/14 Draft for comme

    4、nt 96/103803 DC ISBN 0 580 27363 6 Amendments issued since publication Amd. No. Date Text affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/209/14, Building services, upon which the following bodies were represen

    5、ted: Combustion Engineering Association Institute of Plumbing British Gas plc Chartered Institution of Building Services Engineers Clay Pipe Development Association LimitedBS 8313 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover Foreword iii Code of practice 1 1 Scope 1 2 Re

    6、ferences 1 3 Definitions 1 4 Exchange of information 2 5 Materials and components 2 6 General 2 7 Restrictions on positioning and combination of services 3 8 Space requirements 6 9 Access 7 10 Protection of services in ducts 10 11 Drainage of service ducts 10 12 Ventilation of service ducts 10 13 Fi

    7、re precautions 12 14 Other safety precautions 14 15 Service entries and exits 15 16 Identification and marking 16 17 Duct construction 16 18 Inspection and testing 17 19 Maintenance 17 Annexes A (informative) Installation space for air ducts (detailed method) 18 B (informative) Installation space fo

    8、r air ducts (simplified method) 39 C (informative) Work in confined spaces 42 D (informative) Acts, bylaws and statutory regulations 42 Tables 1 Free area of ventilation opening for dispersal of small leaks 11 A.1 Dimensions where f 1 = 100 and f 2 = 300 27 A.2 Dimensions where f 1 = 100 and f 2 = 3

    9、00 28 A.3 Dimensions where f 1 = 100 and f 2 = 300 29 A.4 Dimensions where f 1 = 100 and f 2 = 300 30 A.5 Values of e a and e b 31 A.6 Values of e a1 , e a2 , e b1 and e b2 31 A.7 Values of e a1 , e a2 , e b1 and e b2 by firm obstacles 33 A.8 Values of n for a firm obstacle on one side 36 A.9 Values

    10、 of n for a firm obstacle on two sides 37 A.10 Values of n for a firm obstacle on three sides 37 A.11 Values of n for a firm obstacle on four sides 38 B.1 Dimensions of X 41BS 8313 : 1997 ii BSI 1997 Figures 1 Minimum sizes of access openings for passage by persons 7 2 Anthropometric data 8 A.1 Spac

    11、e with limitations due to firm obstacles 20 A.2 Jointing and supporting air ducts without insulation and with a firm obstacle on one side 20 A.3 Jointing and supporting air ducts without insulation and with a firm obstacle on two sides 21 A.4 Jointing and supporting air ducts without insulation and

    12、with a firm obstacle on three sides 21 A.5 Jointing and supporting air ducts without insulation and with a firm obstacle on four sides (obstacle not continuous for more than 1 m) 22 A.6 Jointing and supporting pre-insulated air ducts with a firm obstacle on one side 22 A.7 Jointing and supporting pr

    13、e-insulated air ducts with a firm obstacle on two sides 23 A.8 Jointing and supporting pre-insulated air ducts with a firm obstacle on three sides 23 A.9 Jointing and supporting pre-insulated air ducts with a firm obstacle on four sides (obstacle not continuous for more than 1 m) 24 A.10 Insulation

    14、of an air duct in position with a firm obstacle on one side 24 A.11 Insulation of an air duct in position with a firm obstacle on two sides 25 A.12 Insulation of an air duct in position with a firm obstacle on three sides 25 A.13 Insulation of an air duct in position with a firm obstacle on four sid

    15、es (obstacle not continuous for more than 1 m) 26 A.14 Examples of installation spaces for flange jointed air ducts 26 A.15 Installation space dimensions A and B for flange jointed air ducts with a firm obstacle on one side 27 A.16 Installation space dimensions A and B for flange jointed air ducts w

    16、ith a firm obstacle on two sides 28 A.17 Installation space dimensions A and B for flange jointed air ducts with a firm obstacle on three sides 29 A.18 Installation space dimensions A and B for flange jointed air ducts with a firm obstacle on four sides 30 A.19 Examples of installation space for sli

    17、p jointed air ducts 31 A.20 Installation space dimensions A and B for slip jointed air ducts with a firm obstacle on one or more sides 32 A.21 e-values 33 A.22 Minimum access allowance e for air ducts insulated in position 34 A.23 Installation space dimensions A and B for air ducts insulated in posi

    18、tion with a firm obstacle on one side 34 A.24 Installation space dimensions A and B for air ducts insulated in position with a firm obstacle on two sides 35 A.25 Installation space dimensions A and B for air ducts insulated in position with a firm obstacle on three sides 35 A.26 Installation space d

    19、imensions A and B for air ducts insulated in position with a firm obstacle on four sides 36 B.1 Installation spaces for uninsulated or pre-insulated air ducts 40 B.2 Installation spaces for air ducts insulated after installation 41 Index 44 List of references 47 BSI 1997 iii BS 8313 : 1997 Foreword

    20、This British Standard has been prepared under the direction of the Technical Committee B/209. It supersedes BS 8313 : 1989, which is withdrawn. This edition introduces technical changes but it does not reflect a full review or revision of the document, which will be undertaken in due course. This co

    21、de of practice is intended to provide architects, engineers, builders, contractors, suppliers, specialists, and service engineers with recommendations for the design, construction, installation and maintenance of ducts in buildings for the accommodation of services. It also covers ducts attached to

    22、the outside of buildings, suspended flooring and ceiling voids, and cavities which are used for services but not always referred to as ducts. Annex A gives a detailed method for calculating the minimum cross-sectional dimensions of space required in service ducts for the installation and maintenance

    23、 of thin walled HVAC ducting and annex B provides a simplified method for doing the same calculation. Annex C draws attention to the stressful nature and potential hazards associated with working in a confined space and annex D lists Acts, bylaws and statutory regulations which relate to the accommo

    24、dation and maintenance of building services in ducts. As a code of practice, this British Standard takes the form of guidance and recommendations. It should not be quoted as if it were a specification and care should be taken to ensure that claims of compliance are not misleading. In particular, att

    25、ention is drawn to 6.1 and the fact that statutory legislation may impose more stringent requirements in certain circumstances. The standard should not be regarded as a substitute for expert advice. The intention is that it should complement it. Every fire authority has Fire Prevention Officers who

    26、will advise designers, owners and occupiers and who will welcome liaison with architects and facilities engineers on the safety aspects of building design. Advice can also be obtained from the Health and Safety Executive and from local authorities on matters relating to health and safety, and from B

    27、uilding Control Officers if new buildings or major alterations are involved. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 48, an inside back cover

    28、 and a back cover.iv blank BSI 1997 1 BS 8313 : 1997 Code of practice 1 Scope This British Standard gives recommendations for the design, construction, installation and maintenance of ducts in buildings used for the accommodation of services. It also covers enclosures such as ceiling voids and cavit

    29、ies which are used for services but which are not always referred to as ducts. The recommendations in this standard should also be applied as far as practicable to the adaptation, modification or refurbishment of existing ducts and services within them. Appropriate precautions should be taken in all

    30、 cases where the existing ducts contain hazardous materials, e.g. asbestos. This standard covers service ducts attached to the outside of buildings but not service ducts between buildings. This standard does not cover the design and construction of air or refuse ducts, nor those with heart units, pa

    31、ckaged plumbing or service walls, although parts of it are relevant to them. This standard does not cover spaces intended mainly for purposes other than the accommodation of services, nor with plant areas such as boiler and calorifier rooms or gas storage areas. The piping of radioactive substances

    32、and the specialist requirements for piping cryogenic liquids are generally outside the scope of this standard. 2 References 2.1 Normative references This standard incorporates, by dated or undated reference, provisions from other publications. These normative references are made at the appropriate p

    33、laces in the text and the cited publications are listed on page 47. For dated references, only the edition cited applies; any subsequent amendments to or revisions of the cited publication apply to this standard only when incorporated in the reference by amendment or revision. For undated references

    34、, the latest edition of the cited publication applies, together with any amendments. 2.2 Informative references This standard refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on page 48, but ref

    35、erence should be made to the latest editions. 3 Definitions For the purposes of this British Standard the definitions given in BS 6100 apply, together with the following. 3.1 duct Space formed for the passage of cables, pipes, etc. 3.2 service duct Duct that allows working space. 3.3 pipe sleeve Pro

    36、tective pipe through which a carrier pipe or cable is later passed. 3.4 cavity barrier Construction provided to seal a cavity against the penetration of smoke and flame, or within a cavity to restrict the movement of smoke and flame within the cavity. 3.5 fire compartmentation Division of a building

    37、 into compartments by elements of building construction intended to resist the passage of fire, and capable of meeting specified performance criteria to those ends. 3.6 fire door Door or shutter provided for the passage of persons, air or objects which, together with its frame and furniture as insta

    38、lled in a building, is intended when closed to resist the passage of fire and/or gaseous products of combustion and is capable of meeting specified performance criteria to those ends. 3.7 fire resistance Ability of a component or construction of a building to satisfy for a stated period of time some

    39、 or all of the criteria specified in BS 476 : Part 4 and BS 476 : Part 24, covering stability, integrity and insulation. 3.8 fire stop Seal provided to close an imperfection of fit between elements, components or construction in a building, or in any joint, so as to restrict penetration of smoke and

    40、 flame through that imperfection or joint. 3.9 firm obstacle Any obstacle that will interfere with the installation, dismantling or maintenance of a service. 3.10 flash point Lowest temperature at which vapour from oil, etc. can be ignited by an external source. 3.11 installation space Recommended m

    41、inimum space necessary for the installation and maintenance of one or more services where access is limited by a firm obstacle. It is expressed as a rectangular envelope at right angles to and at any point along a run of services. It includes allowances for supports, thermal and sound insulation, an

    42、d safety margins. 3.12 material of limited combustibility Material that conforms to any of the specifications given for materials of limited combustibility in the Approved Document published in connection with B2/B3/B4 of the Building Regulations 19911. 3.13 nominal size Size used in the designation

    43、 of appliance or component. 3.14 protected shaft Stairway, lift, escalator, chute, duct, or other shaft which enables persons, objects or air to pass from one compartment to another.2 BSI 1997 BS 8313 : 1997 3.15 protected stairway Stairway, including any exit passageway leading therefrom to its fin

    44、al exit, enclosed with (other than any part that is an external wall of a building) fire-resisting construction. 3.16 budget lock Lock that has a pivoted tongue, that, when turned 90 by a key, swings into a slot striking plate to serve as a deadbolt. 4 Exchange of information 4.1 Responsibility for

    45、design Before work is begun, a person should be appointed to be responsible for design of the service ducts and co-ordination of the services within them. 4.2 Consultation and co-ordination The necessary consultation and co-ordination should be carried out and particular attention should be paid to

    46、the following points: a) brief from client; b) system for ensuring that drawings and specifications reach those who need them; c) system for spatial co-ordination; d) project programme; e) consultation with planning, building regulations and fire authorities; f) consultation with gas, electricity, w

    47、ater, sewerage and telecommunications authorities; g) consultation with insurers; h) consultation with suppliers of special services such as industrial and medical gases (or other authoritative source); i) operation and maintenance instructions; j) the possibility of increased future requirements ow

    48、ing to further development within or adjacent to the project should be considered. NOTE. Lack of systematic advance planning of services can result in delays and expensive alterations. 5 Materials and components 5.1 British Standards Materials and components should conform to relevant British Standa

    49、rds. 5.2 Choice of materials and components Factors that should be considered when duct materials and components are selected are as follows, not necessarily in order of importance. a) Mechanical properties: strength, elasticity, ductility and mass. b) Electrical properties: electrical conductivity and electrical insulating strength (of an insulator). NOTE. Insulating materials may create the risk of electrostatic discharges. c) Chemical properties: corrosion, dissolution or other failure that may result from reaction with other constituents of the duct or services (e.g. gal


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